From July 14 - 18, Dan Patitucci and his team will cross the Swiss Alps from West to East on road bikes. Beginning in Chamonix, France, the route traverses Switzerland via eleven major passes before it finishes atop the mighty Passo Stelvio on the Italian border.
Europe's largest subterranean lake that can be sailed upon lies between Sion and Sierre. The water grotto is easily accessible and there is a boat tour for viewing it. The guides on the boat tell visitors about the history of the cave and its geology.
If brooks and rivers run only sluggishly above ground, hydropower is nearly impossible to harness. That is why the inhabitants of the valley of Le Locle began to use subterranean streams. This is how the cave mills of "Col-des-Roches" arose.